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Thread: Oil leak

  1. #1
    Doug Budd's Avatar
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    Oil leak

    I developed an oil leak on my o-200. Started out small and got big in a couple hours. It has 100hrs since an overhaul. I cleaned it up and found itís leaking oil out of the base of cylinder 3 and 2 . So am I lucky and itís the base gasket or unlucky and a through bolt. The oil it coming out about half way up the cylinder on the back towards the firewall side


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  2. #2
    cubdriver2's Avatar
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    Try retorquing everything

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  3. #3
    cubdrvr's Avatar
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    I've had thru bolts leak and have had luck loosening, pack end with proseal and retorque
    "Sometimes a Cigar is just a Cigar"

  4. #4
    Doug Budd's Avatar
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    I will try hopefully that will stop it. My worry is the string gave way


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  5. #5
    Doug Budd's Avatar
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    Quote Originally Posted by cubdrvr View Post
    I've had thru bolts leak and have had luck loosening, pack end with proseal and retorque
    That would be great if that would fix it because if I need to split the case I will have to do it in my wifeís dining room. The fbo I used was closed down


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  6. #6
    Doug Budd's Avatar
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    Glenn what proseal are you using. Is it the one for sealing fuel tanks? Thereís several different ones


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  7. #7

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    Yamabond, what the motorcycle guys use to seal up their engines with. It is easy to remove and separate later unlike proseal. Proseal is good but a real pain to remove.
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  8. #8
    Doug Budd's Avatar
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    Yep I help rebuild wings on a air tractor gooey s**t. There is some stop leak called proseal that is used in crank cases and different applications. Wasnít sure if that was what Glenn was talking about. Thanks
    Doug


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  9. #9
    Doug Budd's Avatar
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    Quote Originally Posted by AKjurnees View Post
    Yamabond, what the motorcycle guys use to seal up their engines with. It is easy to remove and separate later unlike proseal. Proseal is good but a real pain to remove.
    Was reading about yamabond . Said it was used to seal case halves on motorcycles I wonder if it would work on Airplane Engines I know permatex is a no-no


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  10. #10
    cubdriver2's Avatar
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    Quote Originally Posted by Doug Budd View Post
    Yep I help rebuild wings on a air tractor gooey s**t. There is some stop leak called proseal that is used in crank cases and different applications. Wasnít sure if that was what Glenn was talking about. Thanks
    Doug


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    Wrong cub driver ;- )

    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

  11. #11
    Doug Budd's Avatar
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    Quote Originally Posted by Doug Budd View Post
    Was reading about yamabond . Said it was used to seal case halves on motorcycles I wonder if it would work on Airplane Engines I know permatex is a no-no


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    Sorry


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  12. #12
    cubdriver2's Avatar
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    But.....I put my C85 stroker together 12 years ago with this, no thread.

    Click image for larger version. 

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    Glenn
    "Optimism is going after Moby Dick in a rowboat and taking the tartar sauce with you!"

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